Trolley harp and guard.



No. 778,376. PATRNTRD 1150.27', 1904. s. G. REYNOLDS. TROLLEY RARRRNDGUARD. APPLICATION FILED JUNE 29, 1903.

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vthe ordinary form of trolley-pole.

rra-778,376;

UNITED STATES Patented December 27, 1904.

PATENT OFFICE.

STEPHEN GIRARD REYNOLDS, OF EASTON, PENNSYLVANIA, ASSIGNOR OF I ONE-HALFTO NATHAN FREEMAN, OF EASTON, PENNSYLVANIA.

TROLLEY HARPAND GUARD.

SPECIFICATION forming part of Letters Patent No. 778,376, dated December27, 1904;. l Application filed Tune 29, 1903. Serial No. 163,592.

T0 a/ZZ whom, it worry concern; Be it known that I, STEPHEN GIRARD REY-NoLDs, a citizen of the United States, `residing at Easton., ycounty ofNorthampton, State of Pennsylvania, have invented certain new and usefulImprovements in Trolley Harps and Guards; and I do hereby declare thefollowing to be a full, clear, and exact description ofthe invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention has for its objectl to provide an improved trolley-head andguard there-v for; and it consists in the various details ofconstruction illustrated inthe accompanying drawings, in whichf Figure 1is a longitudinal cross-section of a trolleyhead .having my improvementsapplied thereto. Fig. 2 is a perspective view thereof, and Fig. 3 is adetail perspective view of my preferred form of shaft or pintle uponwhich the trolley-wheel is mounted.

Referring to the drawings, a indicates the usual form of trolley-harp,having a forked or bifurcated upper portion, in which the trolley-wheelis mounted, and a base portion terminating in a shank adapted to swivelin The opposite faces of the'harp a are provided with bearings for thejournal or axle c, upon which 'the trolley-wheel freelyrevolves.

It is essential that the trolley-wheel revolve on its journal with aslittle friction as po'ssible, and hence it is necessary that-thebearingsurfaces between the wheel and its journal bethoroughlylubricated and that the journal be mounted iirmly and securelyin its bearings -in the harp. To these ends the journal c is made hollowand is provided with a longitudinal slot d, so that said journalcontracts and expands radially with the contraction and ex? pansion ofthe bearings I), thereby insuring a snug iit between the journal and thebearings at all times. The interior of the hollow journal is providedwith a lubricating-packing g, preferably of oil-soaked asbestos, whichsupplies a proper amount of lubricant to the trolley-wheel by way ofslot d. Two transverse pins f are passed through registering ends of thejournal c, which pins serve the double purpose of locking the journal inits bearings and securingl the lubricating-packing in the hollowjournal.

A U-shaped contactspring t' lies within the hollow of the harp and issecured to the latter by means of a bolt y', passingthrough the bends ofthe spring and the harp and locked in position by a nut letinto a recess/sin the shank of the harp. The upper ends of said spring are perforatedto embrace the journal o, and each end bears with a firm pressure uponthe contiguous face of the trolley-wheel /t to afford a good electricalcontact between the trolley-wheel and the leads on the trolley-pole.

In order to prevent the trolley-wheel from accidentally leaving thetrolley-wire, I providea simple formof guard, which consists'of ssyagenerally U-shaped metal yoke having its" kin grooves or channels insaid fork-faces and ley-wheel to jump either laterally or down' wardlyfrom the wire will be instantly met and defeated by the incurving endsof the guard.

' What I claim as my invention is- 1. A trolley-guard, comprising agenerally U-shaped yoke fixed in the opposite inner faces of thetrolley-harp, Vand having its free lends bent inwardly and rearwardly tooverlie the groove in the trolley-wheel.

2. A trolley-guard, comprising a generally U-shaped yoke having the bendthereof engaging the base of the harp and its legs lying in the oppositefaces of said harp, the outer ends of said yoke being bent inwardly andrearwardly to overlie the groove in the trolley- Wheel.

3. In a trolley, a harp having grooves in its inner sides and a recessin its base, and a trolleyguard, Comprising a generally U- shaped yokehaving the bend engaging the external recess at the hase of the harp,and having its legs passed through openings q, q,

in the harp, and lying in the grooves on the 10 inner sides of the arnisof the harp.

In testimony WhereotI l aliix my signature in presence of two witnesses.

STEPHEN Glltiiltll REYNOLDS.

Vitnesses:

CHAs. B. BRUNNER, J oHN BRUNNER.

